Random
Mean and Median
Inferences from Samples
Populations and Samples
Biased vs Unbiased(Random)
100
When information is being gathered about a group, entire group of objects, individuals, or events is called...
The Population
100
What is the median?
5,6,4,2,8,6,7
6
100
What is 102 students
100
A beverage company wanted to see if people in the United States liked their new logo. Which choice best represents a population?
Everyone in the U.S
100
You want to know which store shoppers at the mall visit the most. You ask each 10th person as they enter the mall which store they will visit.
Random(Unbiased)
200
The part of the population that is chosen to represent the entire group is called...
A Sample
200
Find the mean: 5, 10, 23, 25, 24, 8, 19, 32, 40, 16, 17
19.9
200
What is 1316 gift bags
200
A musician wanted to see what people who bought his last album thought about the songs. Which choice best represents a sample?
A selection of people who bought the album.
200
Eight citizens are asked their opinions about what trash should be collected.
Biased
300
This is number, or average of the two numbers, in the center of a set of data.
The Median
300
What is the median?
15,12,19,18,11,16,18,20
17
300
What is 63 students
300
A gaming website wanted to find out which console its visitors owned. Which choice best represents a population?
All of the website visitors.
300
A phone-in survey is taken by a radio station to see how many listeners enjoy jazz in the morning
Biased
400
When is the last day of school?
Friday June 19th
400
What is the Mean?
56.7
400
13 boxes
400
Before a nation wide election, a polling place was trying to see who would win. Which choice best represents a sample?
A selection of voters of different ages
400
Each math class randomly selects two students do represent their class on an advisory panel being assembled by the principal.
Unbiased (Random)
500
Including today, how many days until the 4th of July?
19
500
What is the Mean Absolute Deviation?
18
500
What is 5
500
A toy store owner tracking how much kids spend each month on toys. Which choice best represents a population?
All of the kids who buy toys.
500
Each week a teacher randomly selects one student from each class to review homework answers with the rest of the class.
Unbiased (Random)